Bubba10417

I do see that it says to do that if it is empty but is it needed for top off?

My 21’ LM2 with 30,000 miles uses about 5 gallons every 6,000 miles or so. I rarely tow and mostly highway driving an hour at a time. I’ve owned it since 9,000 miles but have read the truck will regen a lot more I. The first 18,000 miles or so and thag could cause it. Hard to know what to believe without having someone knowledgeable that you can trust. But that is my experience

Hi guys. I have a 21 AT4 with the 3.0 LM2 motor. I’ve had it a year with just over 30,000 miles and since new I rarely experience a slight coolant smell coming from the engine bay after it’s parked. I’ve read that some say it was the smell after regen and others say they’ve eventually found coolant leaks in different areas. I’m trying to monitor it as much as I can but it definitely smells like coolant. It was a bit low when taking it in yesterday to the dealer so I figured they’d top it off an I would monitor it a few times a week. When reading up on it I also read about the automatic coolant fill and air removal process in the 3.0 supplement. Is it necessary to run the automatic coolant fill and air removal process every time even a 1/2 inch of coolant is added? My dealer didn’t even top off the tanks so I’m not happy so when I go back in I surely do not trust them to do that. should I do it on my own? will it hurt anything by doing it if it wasn’t needed or if done too often? thanks for any help. I’m trying to learn as much about this vehicle as possible.

I am also wondering if anyone else has insight on this. I also smell coolant 1 in 20 times or so around the front of the truck after driving. My reservoir is also down about 1/2 of an inch. Anyone have any updated info I have a 21’ AT4 LM2